In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

Galaxies like the Milky Way grow by merging with smaller galaxies over billions of years, unlike dwarf galaxies, which have long been thought to lack the heft to attract mass and grow in the same way.

The Hubble Space Telescope has generated the most comprehensive survey yet of the Andromeda galaxy, the nearest galactic neighbor to the Milky Way. The new mosaic of about 2.5 billion pixels yields ...

Yale researchers among those who discovered three “ultra-massive” galaxies, which were formed shortly after the Big Bang and ...

Supermassive black holes can have trillions of times more mass than the Sun, only exist in specific locations, and could ...

There’s plenty of action at the center of the galaxy, where a supermassive black hole (SMBH) known as Sagittarius A* (Sgr A*) literally holds the galaxy together. Part of that action is the creation ...

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous — and highly debated ...

Researchers from the University of Connecticut have created the first 3D maps of star-forming gas clouds in one of the most ...

Sagittarius A* is the supermassive black hole at the center of the Milky Way. As supermassive black holes go, it is fairly ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

"We have by and large been ignoring triples in models and simulations — we're just starting to understand how these types of ...